Two bright orange lights drifting in formation over San Jose foothills, one breaking off in a tight maneuver.

I was walking down the slope from our house (suburban, well lit area) when my daughter started chasing after me.

I turned around to stop her from reaching the street, and I immediately noticed two bright orange lights above the foothills that rise behind the neighborhood. They were moving slowly west, silently, one slightly behind the other.

The trailing light broke off and made a tight, slow U-turn and disappeared, while the other stayed, continuing to drift west for a good minute before fading from view.

Never seen anything like it, and its coloration was nothing like I've seen on any aircraft (and they weren't on a commercial flight path).